Lathe attachment.



C. C. VERONEE.

LATHE ATTACHMENT.

APPLICATION man APR-4. 1916.

1 ,201 004. Pamented Oct. 10, 1916.

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- C. C. VERONEE.

LATHE ATTACHMENT. APPLICATION man APR. 4. ms.

Patented Oct. 10, 1916.

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ATTORNEYS CHARLES COPELAND VERONEE, OF SUMMERVILLE, SOUTH CAROLINA.

LATHE ATTACHMENT.

To all whom it may concern Be it known that I, CHARLES C. VERoNEE,a-citizen of the United States, and a resident of Summerville, in thecounty of Dorchester and State of South Carolina, have invented acertain new and useful Improvement in Lathe Attachments, of which thefollowing is a specification.

My invention relates to improvements in lathe attachments, and itconsists in the combinations, constructions, and arrangements hereindescribed and claimed.

An object of my invention is to provide an attachment which may beapplied to a lathe of the ordinary construction, by means of whichaccurate tapers may be turned, or by means'of which curved surfaces,such as the ends of shells may be turned accurately.

A further object of my invention is to provide a device of the typedescribed in which means is provided for adjusting the device so thatcurves of different radii may be cut, as well as tapers of differentangles.

A further object of my invention is to provide a device of the typedescribed which consists of relatively few parts, and which is thereforecheap to manufacture.

Other objects and advantages will ap pear in the followingspecification, and the novel features of the invention will beparticularly pointed out in the appended claims.

My invention is illustrated in the accompanying drawings forming part ofthis application, and in which-'- Figure 1 is a plan view of a portionof a lathe showing my invention applied thereto. Fig. 2 is a plan viewof the device showing the attachment at work upon a taper. Fig. 3 is anenlarged section along the line 3-3 of Fig. 1. Fig. 4 is a section alongthe line 1-4 of Fig. 3. Fig. 5 is a side view of the radius bar andcompound rest, the pivot bar being shown in section. Fig. 6 is an endview of the rest shown in Fig. 5.

Referring now to Fig. 1, I have shown therein certain parts which arecommon to ordinary lathes, such as the bed 1, chuck 2, the pulleys 3,the tail stock 4, and the carriage 5.

The parts just described are common and are to be found in all ordinarylathes. The attachment consists of movable members by means of which thelathe tool 6 is constrained to move in a given path, which path dependsupon the purpose for which Specification of Letters Patent.

Patented Oct. 10, 1916.

Application filed April 4, 1916. Serial No. 88,889.

the work is intended, as for instance a taper or a curve, 'as infinishing a shell.

In the drawings I have shown a runway 7 whlch is designed to rest on thebed of the lathe, and which bears an adjustable slide 8, the latterbeing adjusted by means of a screw 9 which passes through a nut 10, seeFigs. 1 and 2, by means of which the slide is forced forwardly orbackwardly as desired. The slide 8 bears at one end a pivotally mountedsupport 11 whose pivot pin 12 extends through an opening13 in the slide.The support 11 is designed to hold the pivot carrier bar 14, this barbeing secured inposition by means of a plate 15 and screws-16. At thetail stock end of the lathe there is a pivot carrier support composed ofparts which are precisely like those described in connection with themembers 7 to 16 inclusive, these parts being numbered 7 to 16 inclusive,with the exception of the member 14:, this member being held by thepivoted supports 11 and 11. I

Referring now to Fig. 5, I have shown therein a pivot carrier 17 whichis secured to the bar 14 by means of the plate 18. The pivot is shown at19, and to it is secured a member 20 through which an extension rod orradius rod 21 passes. A set screw 22 is for the purpose of clamping therod 21 to the member 20. The opposite end of the rod 21 is connected at23 to a slide 24., see Fig.

adjusted by means of a screw 27, the lower half 26 may be locked to thecentral slide 24 by means of a set screw 28, while bolts 29 lock thelower half 26 to the cross slide 30 of the lathe carriage.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. Let us assume that a 10"shell is to be finished on a curve at its forward end. The shell 31 isplaced in the chuck 2 and is held by the center pin 32 in the ordinarymanner. The bolts 29 and the set screw 28 are released. The compoundrest is free to slide to and fro and is also rotatable on the centralpivot 35, see Fig. 6. The radius rod 21 is firmly clamped by means ofthe set screw 22, but it is free to swing about the pivot 19 as acenter. The compound rest will cause the tool 36 to be moved in the arcof a circle, as the lathe carriage 5 moves forwardly. This insures theabsolute accuracy of the work. Obviously the radius may be increased ordiminished by shifting the radius rod 21,

- observed that the pivot carrier bar 1 1 is disposed at an angle to theaxial line of the lathe center. This is done by loosening the plates 15and 15, getting the proper adjustment by means of the screws 9 and 9,and afterwardsecuring these parts in position. The bar 21 is secured bymeans of a set screw 9 in any desired position, while the plate 18 isloosened to permit the movement of the-pivot carrier 17 along the bar14. It will be obvious that, as such movement takes place, the tool 36will come nearer the axial line. .In fact, it will substantially followthe line of the bar .14, or the axis of the same, so that a taper willbe made on the piece 37 which is being worked. Obviouslythis taper maybe varied as desired within limits.

1. The combination with a lathe provided with a'compound tool resthaving relatively movable parts, of a bar, means for adjusting theposition of the bar with respectto the axis of the lathe, a carriermounted on said bar and slidable along the bar, a clamp for securing thecarrier in its adjusted positions along the bar, said carrier having apivoted portion provided with a slot arranged to extend therethrough, aradius rod having a portion extending through said slot, and means 'forsecuring the radius rod to said pivoted portion in adjusted positionswith respect thereto, the opposite ends of the radius rod being securedto one of said movable portions of the compound tool rest.

2. The combination with a. lathe provided with a compound tool resthaving relatively movable parts, of a bar, means carried by the lathefor adjusting the position of the bar with respect to the axis of thelathe, said means comprising a pair of slidable members carried by thebed of the lathe, pivoted supports carried at the end of said slide andadapted to receive the bar, screw shafts for adjusting the position ofthe slide, a car.- rier having a pivoted portion, said carrier beingsupported upon said bar, and slidable thereon, means for clamping thecarrier rigidly to the bar at any position along the bar, and a radiusrod connected with said pivoted portion at one end and with one of saidmovable parts of the compound tool at the other end.

3. The combination with a lathe provided with a compound tool resthaving relatively movable parts, of a bar, means carried by the lathefor adjusting the position of the bar with respect to the axis of thelathe, said means comprising a pair of slidable members carried by thebed of the lathe, pivoted supports carried at the end of said slides andadapted to receive the bar, screw shafts for adjusting the position ofthe slide, a carrier having a pivoted portion, said carrier beingsupported upon said bar and movable thereon,means for clamping thecarrier rigidly to the bar at any position along the bar, a radius rodconnected with said pivoted portion at one end and with one of saidmovable parts of the compound tool at the other end, and a set screwcarried by said carrier for holding the radius rod in adjusted positionwith respect to the carrier.

CHARLES COPELAND VERONEE.

I copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

- Washington. D. G."

